S-98511A253 4-40 x 5/8" Aluminum Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue-anodized 7075 aluminum construction for extended service life in harsh environments
• Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• High-strength 7075 aluminum alloy provides excellent strength-to-weight ratio for demanding applications
• Hex socket drive compatibility allows for secure installation with standard 3/32" hex tools
• Fully threaded design offers maximum grip length and uniform load distribution
• Right-hand UNC coarse threads enable quick assembly and disassembly in industrial settings
• Compliance with RoHS 3 and REACH regulations ensures environmental responsibility and global market acceptance

Professional Applications & Engineering Value

These blue-anodized 7075 aluminum socket head cap screws deliver exceptional performance in applications where weight reduction, corrosion resistance, and high-strength fastening are critical. The Class 3A thread fit provides superior dimensional accuracy for precision assemblies in aerospace, automotive, and electronics industries. The UNC coarse thread pattern combined with right-hand threading ensures rapid installation in production environments, while the anodized surface treatment creates a durable barrier against oxidation and chemical exposure. These fully threaded fasteners maintain consistent clamping force across the entire 5/8" length, making them ideal for vibration-prone applications requiring reliable, long-term performance.

Specification Summary & Compliance

Manufactured to precise UNC thread standards with Class 3A thread fit tolerance for superior dimensional accuracy. Features right-hand coarse threads with 4-40 thread size and standard socket head profile compatible with 3/32" hex drive tools. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial applications worldwide.